When Metallica and actor Billy Eichner go for a joy ride, things get weird. We’re talking Disney-sing-along weird, and that is no joke.

In a preview for an upcoming episode of Carpool Karaoke: The Series, Metallica shines bright like a diamond as the star of the episode, singing Rihanna’s “Diamonds” and “Part of Your World” from Disney’s The Little Mermaid.

Is it just us, or does it look like drummer Lars Ulrich is a Rihanna fan? That smile is telling! (In all fairness to Lars, they did sing some Metallica in the beginning of that preview, so he’s still got some cred.)

In addition to the above video, Billboard exclusively premiered another preview of the Carpool Karaoke episode. There's another Little Mermaid moment as well as a round of "Metal Have I Ever," which is essentially “Never Have I Ever” with (Gene Simmons’ favorite) metal horns instead of holding up three fingers. Watch the full Billboard preview here.

Metallica’s episode will be available to watch Tuesday, August 15 at 9 PM ET.